Tag
cutover
- Aug 21, 2026 Rollback as a Question of Write Reversibility Why reverting traffic is easy and reverting state is not, how dual-write and tombstones change the rollback budget, and when a cutover becomes one-way. cloud infrastructure
- Apr 24, 2026 Shadow Traffic and Differential Comparison Before a Cutover How mirrored requests expose behavioural differences between two implementations, why response bodies rarely compare cleanly, and what a comparison harness must normalise. cloud infrastructure
- Feb 1, 2026 Switching the Write Path: Cutover, Rollback, and the Point of No Return How to move writes to a replacement store without a window of two writers, what rollback actually requires after new-only data exists, and how to decide when reversal stops being possible. software architecture
- Nov 12, 2025 Bulk Copy and Change Stream: Making an Online Copy Consistent Why a snapshot must be pinned to a stream position before the copy begins, how the catch-up phase terminates, and where replication lag turns into an unbounded delay. cloud infrastructure
- Oct 17, 2025 DNS TTL, Resolver Caches, and the Real Duration of a Cutover How negative caching, recursive resolvers, and connection reuse stretch a five-minute TTL into hours of split traffic, and what actually bounds the redirect window. cloud infrastructure
- Jul 1, 2025 Online Resharding: Moving a Range Without Stopping Writes How a range is migrated while it is being written to, why the cutover is a metadata transaction, and what the dual-write window costs in correctness. databases
- Jun 13, 2025 Cutover Between Two Systems: Dual Writes, Shadow Reads, and the Switchover Point How a migration moves authority from one store to another without a window of divergent writes, and why the cutover must be a single atomic epoch change. distributed systems
- May 26, 2025 The Cutover Boundary of a Workload and Why It Is Never One Process How to decide which processes, data stores, and identities must move as one unit, what breaks when a boundary is drawn too small, and the cost of drawing it too large. cloud infrastructure
- Feb 3, 2025 Sequencing a Cutover Against a Dependency Graph Why the ordering of moves is constrained by who calls whom, how to find a valid sequence, and what happens when the graph contains a cycle. cloud infrastructure
- Dec 20, 2024 Shard Migration Cutover and the Dual-Write Window How a partition moves between machines without losing writes, why the cutover is a state machine rather than a copy, and what has to be true before the source is retired. distributed systems
- Feb 7, 2022 Post-Cutover Reconciliation and Drift Detection How to prove that a destination holds the same state as its source after the switch, why checksums over large tables lie, and how to detect divergence that appears later. cloud infrastructure